If this is a desktop pc, you can remove the cmos battery or move the jumper by the battery to clear it. If it is a laptop you would have to try some of the admin/developers backdoor passwords found here. http://www.uktsupport.co.uk/reference/biosp.htm

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simple, take out the bios battery, from the mother board, and wait 2 to 3 hours, because in this time the bios get to default levels, then again put the battery, u r password has gone.................................................

Windows
Password Recovery is right what you need which is designed to reset Windows
login password once you accidentally forgot it or have no access to your
system. By burning a bootable CD, you can enter almost any computer with
Windows administrator login password protected within a few seconds.

if you are using a desktop computer you can reset *********** board settings by removing the battery or by connecting the jumper setting but to do this you need the manual of the mother board. you need to find the exact place where to connect the jumper.
if you are using the laptop there is no way you can reset the motherboard of the laptop. some people use a program just to reset the bios settings but for it is quite dangerous. because it might damage the bios program in the mother board.

Most _laptop_ computers do *NOT* have that jumper; if there was one, a thief who stole your laptop could delete any BIOS-password, and then use your computer. So, to protect you, the registered owner, there is no jumper.

The BIOS password is removed by the BIOS configuration, you need the BIOS password to get into the BIOS configuration.But if you do not have the BIOS password then you need to construct this dongle device.TOSHIBA BIOS PASSWORD DONGLE You can build a dongle that plugs into the printer port.Purchase a 25 pin male D sub connector and solder insulated wires to the various pins as listed below. The pins are numbered on the connector http://www.tilman.de/sonstiges/toshiba/dongle1.jpg this is a picture of the finished dongle

Wire the pins as follows :-1-5-10, 2-11, 3-17, 4-12, 6-16, 7-13, 8-14, 9-15 Plug the finished dongle in the printer port and power up the laptop. The password will be reset, go into the BIOS configuration to check the BIOS password, you may have to disable the BIOS password.

No need to short out any pins, shorting out pins allow you to reset the BIOS quickly. When you leave the BIOS/CMOS battery out overnight, this will reset the BIOS (you only need to leave the battery out for 1/2 + hour to do the same thing).

I have set the password for administrator when i entered the bios set up. you can change its setting but not the configuration unless you've entered the password. you can't change the password with a new one if you cant enter the old password. Next time dont forget your password because laptops has its security even when stolen you cant open its bios set up if its protected by password. CMOS battery is in the mother board. You need a service technician to open your laptop to reset the bios setup battery.

just the jumper position on the mother board pin 1 and pin 2 will be occupied just unplug the power cord and remove the jumper and put the in 2 and 3 then wait for 5 sec then put the jumper to original position and power the laptop